{"summary": "---\n## instruction:\nThe errors are caused by both the development code and the test code. The development code needs to be fixed to ensure that the `reset_game` method resets the grid properly. The test code also needs to be fixed to ensure that the `add_new_tile` test does not raise an index out of range error.\n\n## File To Rewrite:\ngame.py\n\n## Status:\nFAIL\n\n## Send To:\nEngineer\n---", "stdout": "", "stderr": "E.......F\n======================================================================\nERROR: test_add_new_tile (__main__.TestGame)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/Users/xx/tests/test_game.py\", line 104, in test_add_new_tile\n    self.assertIn(self.game.grid[empty_cells[0][0]][empty_cells[0][1]], [2, 4])\nIndexError: list index out of range\n\n======================================================================\nFAIL: test_reset_game (__main__.TestGame)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/Users/xx/tests/test_game.py\", line 13, in test_reset_game\n    self.assertEqual(self.game.grid, [[0 for _ in range(4)] for _ in range(4)])\nAssertionError: Lists differ: [[0, 0, 0, 0], [0, 2, 0, 0], [0, 0, 0, 2], [0, 0, 0, 0]] != [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]]\n\nFirst differing element 1:\n[0, 2, 0, 0]\n[0, 0, 0, 0]\n\n- [[0, 0, 0, 0], [0, 2, 0, 0], [0, 0, 0, 2], [0, 0, 0, 0]]\n?                    ---                 ^\n\n+ [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]]\n?                      +++               ^\n\n\n----------------------------------------------------------------------\nRan 9 tests in 0.002s\n\nFAILED (failures=1, errors=1)\n"}